JP2012509779A - Molded body for manufacturing fiber composite parts - Google Patents

Abstract

The present invention relates to a molded body for producing a fiber composite part.
According to the present invention, the molded body is formed at least partially using paper and / or cardboard material. Paper and / or cardboard materials can be provided with additional properties such as airtightness and non-stick properties by utilizing appropriate functional layers. Furthermore, the material makes it possible to produce highly dimensionally stable shaped bodies or support cores in such a way that fiber composite parts with a highly reproducible spatial dimension can be produced. In addition, after curing, the compact can be crushed in a simple manner by utilizing vacuum conditions and then removed from the fiber composite part without residue. Furthermore, the shaped bodies can be produced in a cost-effective and practically unlimited range of geometric shapes using production methods known from the packaging industry. The invention further relates to a method for producing a fiber composite part utilizing a shaped body.

[Selection] Figure 1

Description

  The present invention relates to a molded body for producing a fiber composite part. The present invention further relates to a method for producing a fiber composite part formed using a thermosetting plastic material using at least one molded body according to the present invention.

  In modern aircraft structures, plant engineering, alternative energy systems, and sporting goods, fiber composite parts are increasingly used to manufacture structural parts. For example, a shell segment for forming a body portion known as a four shell structure is manufactured using carbon fiber reinforced epoxy resin or other fiber reinforced thermosetting plastic material. In addition, ladder units, horizontal tails, aerofoils, wing boxes, summer rods, and additional structural and non-structural aircraft parts can be formed using this type of fiber composite.

  The shell segment comprises, inter alia, a membrane panel formed using a fiber composite material, and additional structural parts for reinforcement, such as stringer profiles or original segments, can be secured to the membrane panel, particularly by adhesion. The stringer profile described by way of example is a hollow profile, extending in the longitudinal direction of the associated fuselage section and preferably arranged internally distributed around the periphery of the fuselage section. In order to strengthen medium aircraft type aircraft fuselage cells, a hollow profile of up to 4 km, each having a length of up to 20 m, is required. These hollow profiles are preferably known as Ω stringers and have a substantially trapezoidal cross section.

  For the integral formation of the stringer hollow profile on the membrane panel, for example, the molded body is placed in a position where it is desired to be static of the membrane panel formed using prepreg material and / or fiber composite material, The membrane panel is placed on a base having a surface shape configured accordingly. The molded body and the parts of the membrane panel attached to it are then finished in layers using a prepreg material, or a fabricated profile is placed on the molded body. Once the sealing tape and optional function layer (drainage layer, tear-off fabric, membrane, distribution medium, separation foil, etc.) are placed and the vacuum foil is applied, the whole structure is discharged At the same time, it is introduced into the autoclave to cure the stringer profile.

  A pre-formed film hose and / or rigid foam profile that is placed under pressure before the prepreg material is applied can be used, for example, as a formed or supporting member for an Ω stringer that is to be manufactured. .

  The rigid profile has, in particular, the disadvantage that it is difficult or impossible to remove from the finished fiber composite part and exhibits a static and unnecessary additional weight after the curing process. Due to their porosity, they have an uncontrollable effect on the packwall echo, which makes the required ultrasonic testing even more difficult. Furthermore, open rigid foams can cause problems with through condensate.

  On the other hand, the pre-formed pressure hose also has only a low dimensional stability, which is disadvantageous in the form of local delamination or fiber angle deviations, for example in Ω stringer hollow profile layer structures or membrane laminates. Can lead to. In addition, perforations often cause problems with respect to the need to make the hose profile airtight. In addition, the pressure hose often ruptures due to the low tear resistance of the pressure hose and therefore adheres to the interior of the stringer hollow profile in an uncontrollable manner, leaving undesired film residues. Pulling out the pressure hose becomes a problem even when the water is exhausted.

  In addition, by using solvents such as water, there are core materials that can be sufficiently removed from the undercut fiber composite parts without residue. However, these core materials are quite expensive and consequently have limited properties to absorb water and absorb water, making it difficult to manufacture low resistance fiber composite parts. For this reason, it has only a limited dimensional system.

  Therefore, an object of the present invention is to provide a molded body for producing a fiber composite part that greatly overcomes the above-mentioned drawbacks of the support core for producing the composite part.

  This object is achieved by a molded body having the features of claim 1.

  At least in part, the molded body is formed using cardboard and / or paper, so it is possible to produce a very cost-effective molded body with a three-dimensional shape and a wide area of any preferred length It is. In addition, the shaped bodies constructed according to the invention can significantly simplify the production of all kinds of fiber composite parts such as refracting tubes, plates or hollow profiles. The paper and / or cardboard used may actually be any preferred material thickness. Preferably, cardboard with regularly repeated geometric hollow structures such as corrugated or sandwich plates may also be used. A molded body formed using cardboard and / or paper has high dimensional stability so that the fiber composite part to be produced can be produced with high dimensional accuracy. Furthermore, the use of these materials allows for environmentally friendly processing. The use of paper and / or cardboard material to produce the support core is further known in the packaging industry to produce molded bodies or supports having virtually any preferred complex surface shape, A series of shaped bodies having the possibility of using all categories of production methods such as cutting, creasing, perforation, folding, draining, gluing, compression and loading, plus virtually any preferred length Manufacture can begin with paper and / or paperboard material stored in a supply roll. Furthermore, if necessary, a plurality of shaped bodies can be bonded without adhesive by using positive bonding. Preferably, cardboard and / or paper having sufficient thermal stability is used. That is, as a semi-finished product at the time of manufacture, cardboard and / or paper can be prepared to be non-tacky, for example.

  A further advantageous development results in the shaped body being in particular a support core for producing hollow profiles.

  This is quite significant, for example, when constructing what is known as the Ω stringer hollow profile on the fuselage section, which is formed using fiber composites and is required many in fuselage section manufacturing or aircraft fuselage cell manufacturing. Cost savings.

  Furthermore, the shaped bodies according to the invention can be advantageously applied in many further technical fields such as shipbuilding, wind energy, boiler production, leisure equipment production, and general mechanical engineering.

  A further advantageous embodiment of the shaped body results in it having a cross-section that can be formed from any combination of triangular, rectangular, trapezoidal, oval or elliptical cross-sections in particular.

  As a result, reinforcing profiles formed from fiber composite materials can be produced in a wide range of variations using shaped bodies constructed according to the present invention. For example, by using a support core having a circular shape, pipes or summer rods can be manufactured in a simple manner using fiber composite materials. On the other hand, support cores having a substantially trapezoidal cross-section are used in the manufacture of what is known as the Ω stringer hollow profile, which requires a large number to strengthen the fuselage cell structure. Regardless, a support core having a substantially rectangular cross-section can be used as a pressure plate in a prepreg structure, for example, to prevent laminating warpage during subsequent curing processes in an autoclave.

  In a further advantageous embodiment of the shaped body, it is formed with at least two partial support cores.

  This embodiment makes it possible to form more complex geometric shapes using a combination of simple base shapes.

  Further development of the shaped bodies results in the plurality of partial support cores being joined together, in particular by adhering at least a plurality of sites and / or positively connected to each other.

  This results in a tight bond and thus high dimensional stability in a support core formed from a plurality of partial support cores.

  Further development of the shaped bodies results in the shaped bodies having functional layers that are in particular non-adhesive layers and / or sealing layers in at least several locations.

  In particular, this functional layer can make the molded body airtight. Furthermore, the functional layer makes it easier to remove the molded body from the manufactured fiber composite part. These functional layers are preferably already applied and / or bonded to paper and / or cardboard at the time of manufacture as semi-finished products for shaped bodies.

  In a further development, the shaped body can be removed from the fiber composite part by using a vacuum and / or a solvent.

  While the far side of the molded body is sealed in a pressure-tight manner by the seal plug, the vacuum state is applied to the molded body, for example, by guiding a solvent plug to the end portion of the molded body. Also, the support core may already be provided with at least one socket or at least one pressure hose for suction already at the time of manufacture. Each of the suction plug and the seal plug has a three-dimensional shape that enables a firm and all the above-mentioned compact mounting in the molded body. To accomplish this, the plug can be provided with a resilient sealing means such as a peripheral seal edge, seal profile, seal lip and the like. In addition, the plug can be manufactured using an elastic foamed plastic material, such as foamed polyethylene, which is additionally tapered on all sides.

  The vacuum pump is attached to a suction plug that uses a hose wire. After the manufactured fiber composite part has been cured, the vacuum pump can be used to create a vacuum condition in the molded body, and this vacuum condition is completed under the influence of ambient air pressure. Crush the molded body or the support core. Once the support core is crushed, it can be removed from the fiber composite part in a simple manner.

  The shaped body can also be softened with a suitable solvent, such as water in a liquid and / or gaseous state, and optionally removed from the fiber composite part without residue from washing.

  A further advantageous embodiment of the shaped body can then be positively applied to at least multiple sites of fiber composite parts using excessive pressure, while the shaped body can then be guided into previously cured fiber composite parts. For example, allowing repair work to be performed on damaged CFPR parts.

  Initially, the support core that is still crushed can be guided or inserted into the site of a defect in the part, for example a tear. The support core is then placed under pressure or under the condition of “expanded” using a compressor, and this ideal result in the support core is applied across the entire surface to the interior surface of the fiber composite part and repaired. Is made possible by the hierarchical application of external prepreg materials. The compressor is also attached to the support core via a hose attached to the pressure plug, and can also be connected to or inserted into the support core in a pressure-tight manner relative to the pressure plug. In addition, the repair support core can also be provided with at least one socket provided at the time of manufacture for pressure and / or vacuum hoses.

  Furthermore, the molded body can be used as a plate-like projecting member and a molded core for a sandwich structure.

  The object of the invention is also achieved by a method according to claim 9.

  Since the geometric shape of the fiber composite part is defined by at least one shaped body according to any one of claims 1 to 8 in at least a plurality of locations, the fiber composite part is conventional for fiber composite parts. With this manufacturing method, although it is still a reasonable manufacturing cost, it can be manufactured in large quantities with high dimensional accuracy. In this context, the molded body can be used in conjunction with any molding tool to produce a fiber composite part using a thermosetting resin system, at least for the definition of multi-site geometry.

  An advantageous development of the method is that at least one shaped body is provided at least in a plurality of locations, in particular a curable fiber composite material which is a prepreg material, the fiber composite material is subsequently substantially cured and at least one It provides that the shaped body can be removed from the finished fiber composite part.

In the main invention of the method, in the form of producing a membrane panel reinforced with Ω stringers that together form a fiber composite part, the method proceeds as follows, for example:
In the first method step, the membrane panel formed using the prepreg material in this alternative method is first spread on the working base. Thereafter, at least one shaped body formed using cardboard and / or according to the present invention using paper is placed on a membrane panel, such as a support core, and is cured, in particular with a prepreg material used for the membrane panel. It is covered in a layered manner together with the conductive fiber composite material.

  The fiber composite is then cured in a second method step, which is carried out, for example, at room temperature, in an oven or in an autoclave at excessive pressure. In some cases, additional method steps are required for the autoclave curing process, such as building an airtight vacuum structure. The vacuum structure further has additional functional layers such as a cut-out structure, a separation foil, and a distribution medium. Instead of the sealing tape, a sealing compound or sealing putty, a sealing bead, an adhesive tape or an O-seal can be used. By applying vacuum conditions, it is common to seal the vacuum foil from the working base and to realize an ideally completely laminated structure to release the prepreg material from porosity, material separation, etc. Is necessary.

  The shaped body is removed from the cured fiber composite part in a third method step. This removal can be carried out, for example, by applying a vacuum to the shaped body in such a way that it collapses or falls on itself under the influence of ambient air pressure and is removed from the fiber composite part in a simple manner. obtain. The collapse of the molded body or the support core means that any cutting that is incompatible with the molded body is resolved. In addition, if necessary, by further supplying a solvent, it is possible to soften the molded body by using an appropriate solvent such as water in order to wash out the molded body from the composite part in a method without residue. .

  A variation of the above method using a shaped body according to the present invention was formed by joining together at least two parts formed using fiber composite materials, such as membrane panels and multiple Ω stringer hollow profiles. It can be applied when manufacturing fiber composite parts. In this context, the term “fiber composite” refers to a fiber that is not yet cured at the time of manufacture, for example a carbon fiber reinforced epoxy resin, a prepreg, and / or a dry fiber semi-finished product for matrix injection. It means a composite material.

  The method is also at least one cured fiber composite material, such as a membrane shell, and a part to be secured thereto, and has not yet been cured, such as a stringer profile, the former segment, or a support elbow. It can also be used to join parts together. Conversely, a cured stringer profile can also be applied to a single soft membrane panel constructed using a prepreg material.

  Furthermore, the method can be carried out to produce parts by resin impregnation or injection of the original dry reinforcing fiber arrangement. Examples of manufacturing methods starting with dry reinforcing fiber placement include, for example, “resin film injection”, “vacuum injection”, and “resin transfer molding” or RTM.

  Further advantageous embodiments of the method are specified in the further claims.

It is a perspective view of the example structure for manufacturing the fiber composite part using the molded object which concerns on this invention. Fig. 2 shows an exemplary molded article product from planar cardboard and / or paper blanks. Fig. 2 shows an exemplary molded article product from planar cardboard and / or paper blanks. Fig. 2 shows an exemplary molded article product from planar cardboard and / or paper blanks. Fig. 2 shows an exemplary molded article product from planar cardboard and / or paper blanks. Fig. 2 shows an exemplary molded article product from planar cardboard and / or paper blanks. 2 shows exemplary combinations of shaped bodies for different applications with different cross sections. 2 shows exemplary combinations of shaped bodies for different applications with different cross sections.

  In the figures, each identical component has the same reference number.

  FIG. 1 is a schematic view of a structure that can be used to manufacture a fiber composite part using a shaped body constructed according to the present invention.

  The structure 1 intended to be cured in an autoclave has, inter alia, a planar substrate 2 and the corrugated prepreg material 3 is spread to produce a membrane panel. The prepreg material 3 has a plurality of layers stacked on top of each other to satisfy a material thickness of up to 70 mm. The substrate 2 corresponds to the manufactured fiber composite material and generally has a geometric surface that is curved in at least one dimension of the space. In this case, the molded body 5 formed as the hollow support core 4 is placed on the prepreg material 3. The support core 4 has a trapezoidal cross section. The support core 4 or molded body 5 according to the present invention is formed from a corrugated cardboard material using a blank produced by folding from an original planar blank. Two preferred adhesive seal tapes 7, 8 are stretched between the end 6 of the support core 4, the prepreg material 3, and the support core 4 itself to produce an airtight end seal. The sealing tapes 7, 8 are sticky on one or both surfaces. The prepreg material 9 is located on the upper surface of the support core 4 and is used in the embodiment of FIG. 1 to form what is known as an Ω stringer profile on the sufficiently planar prepreg material 3. Thereafter, when cured, the cured prepreg materials 3 and 9 are combined with a prepreg material and / or a superstructure (not shown) made with a dry reinforcing fiber arrangement, and in the figure a multi-cell structure with a fuselage. A fiber composite part 10 is formed which is part of a larger shell segment 11 for forming cells. If desired, one or more functional layers 12, such as non-adhesive layers, separation foils, etc., can be placed above and / or below the prepreg materials 3,9. If necessary, the upper surface of the prepreg material 9 including the functional layer 12 disposed thereon is finally covered with a vacuum foil 13. The structure 1 with the base 2, the support core 4, the optional one or more functional layers 12 and the vacuum foil 13 covers the parts in order to be manufactured in the shape of the shell segment 11 on all sides. The entire structure 1 is sealed at its ends in an airtight manner, preferably using sealing tapes 7, 8 known as "putty tapes". Furthermore, additional sealing means, for example resilient sealing compounds, sealing cords or sealing patties, generally require two sealing tapes 7, 7 to achieve a sufficient hermetic chain of fiber composites 3, 9. Required in addition to 8. Furthermore, the structure 1 may have a supply line (not shown) for a liquid resin or a socket for exhausting using a vacuum pump, if necessary.

  In order to cure, the entire structure 1 is guided, for example, in an autoclave (not shown), and the space defined by the vacuum foil 13 and the base 2 is particularly uniform to prevent entrainment of air and without warping. Exhaust as well as possible to achieve a laminated structure.

  During the curing process in the autoclave, the support core 4 is not exposed to increased pressure that can lead to undefined shape deviations and consequently uncontrollability, in particular non-reproducible dimensional deviations. For example, the same pressure up to 10 atm spreads to the outer surface of the vacuum foil 13 and the inner portion 15 of the support core 4.

  After the curing process in the autoclave has been completed, the suction plug 14 is guided into the interior 15 of the end 6 of the support core 4 in the direction of the arrow 16. The suction plug 14 is adapted as precisely as possible to the respective geometry of the support core 4 at the end 6 so that a compact connection to the support core 4 is possible. The suction plug 14 can be manufactured, for example, using a foamed closed cell material that is slightly conical. Silicone rubber is also suitable as a plug material due to its good non-stick properties as well as high resilience.

  Through the preferred pluggable socket 17, the support core 4 can be crushed under the influence of the surrounding air pressure by applying a vacuum condition, ie the support core falls on itself and in particular Even in the case of a long support core 4, it can be pulled out of the fiber composite part 10 with little mechanical resistance and without any residue. The vacuum state is generated using, for example, a vacuum pump (not shown) connected to the suction plug 14 via a hose wire, and the hose wire is connected to the suction plug by a (plug) socket 17. In order to be able to eliminate the support core 4, the free socket seal plug is provided at the second end (not shown) of the support core 4 so that it completely seals from the surrounding atmosphere and seals the interior 15. Guided into the site. The second end of this support core 4 is also simply compressed and optionally glued to provide a fully sealed closure. Furthermore, further openings still present in the support core 4 should be sealed.

  As a method for guiding the vacuum state in the inside 15 of the support core 4, the suction plug 14 can also function as a pressure plug as compared with the aforementioned function. This structure can be applied, for example, in a fuselage cell structure that is an Ω stringer profile with a tear, particularly when, for example, a defective Ω stringer profile needs to be repaired later. In this type of configuration, the support core 4 is initially guided into the Ω stringer profile at the defect site, after which the support core 4 is ideally the interior 15 of the Ω stringer profile (temporarily stable laminated core). Inflated by the pressure plug so that it is completely in contact with the. The support core 4 is likewise connected to the plug socket 17 of the pressure plug, for example via a hose wire, and can be expanded using a compressor. The defect can then be repaired in a manner known from overlaminate prepreg materials. Once the repair is complete and the prepreg material is cured, the pressure plug is in its original form as an intake plug 14 so that the support core 4 can be collapsed by applying vacuum and removed from the Ω stringer profile. Used again in function.

  Also, the dry fiber semi-finished product can be used in place of the prepreg materials 3, 9, in which case a different vacuum structure may be required for resin injection.

  Furthermore, the method of using the molded body 5 or the support core 4 can be applied to a fuselage section that will be produced in one part by bending, similar to the production of fiber composite parts for producing a fuselage section in a multi-cell structure. Can also be applied.

  FIGS. 2 to 6 schematically show how the support core 4 is produced from a planar corrugated cardboard blank or paper blank in connection with the description to be described later.

  Starting from a continuous waveform blank 18, the required length blank 20 is separated along the cut line 19. A plurality of fold lines are provided in this blank 20 which are initially still planar in order to allow a geometrically defined fold, in which one fold line 21 is provided with a reference sign. . Also, the used continuous waveform blank 18 can already have the required folding line 21. In a further method step, the support core 4 is folded from the blank 20 along these fold lines, each indicated by a dotted line. When the continuation 18 is formed using corrugated cardboard material, each of the fold lines 21 is preferably stretched perpendicular to the crest line or the base line to obtain the maximum possible stiffness of the shaped body. This is irrelevant if small cardboard or paper material is used. The fold line 21 divides the blank 20 into a bottom surface 22 and side surfaces 23 and 24 adjacent to both sides thereof. The joining surfaces 25 and 26 are adjacent to the two side surfaces 23 and 24, respectively.

  In FIG. 3, the left-hand side surface 23 of the support core 4 is initially bent upward along the joint surface 25 adjacent thereto. Next, as shown in FIG. 4, the right-hand side surface 24 is bent in the opposite direction along the second joint surface 26 adjacent thereto. Next, an adhesive 27 is applied to the second joint surface 26 in the form of a joint bead at least at a plurality of locations, and the first joint surface 25 is used to finish the support core 4 as shown in FIG. And bent so as to adhere to the second joint surface 26. Instead of gluing, the joining surfaces 25, 26 can also be connected, for example by positive locking. If small cardboard is used, the support core 4 may be an additional seal, such as a seal and / or adhesive tape, so that other gases or ambient air can pass through the corrugated and / or hollow spaces between the adhesive beads. It can be produced in an airtight state only as generally preferred by means.

  Since the full range of process steps obtained from the packaging industry can be used to manufacture the support core 4, the manufacture of the support core 4 should only be considered as one example among many possible manufacturing options. is there.

  Figures 7 and 8 show excerpts of the respective shaped bodies having different cross sections.

  FIG. 7 shows the outline of each of the four (hollow) shaped bodies having different cross sections.

  Unlike the molded body of FIG. 7, the molded body of FIG. 8 is not hollow, and is formed without, for example, a hollow space. The shaped body shown in FIG. 7 is used for all of the above to produce a hollow profile with a corresponding cross-section using a dry reinforced fiber arrangement that does not yet contain a prepreg material and / or a suitable plastic material. It is done. In contrast, the shaped body of FIG. 8 is not particularly a hollow profile fiber composite part, but in the manufacture of any profile type element such as a T stringer, U stringer, I stringer, Z stringer, or L stringer. It can be provided as a universal manufacturing aid (molding and / or support means).

All of the compacts shown in FIGS. 7 and 8 can be manufactured using conventional corrugated cardboard, or using sturdy paper and / or a relatively thick cardboard material. Furthermore, the shaped bodies can also be formed using cardboard articles having a hollow space structure that is continuously repeated, preferably in the manner of a cardboard sandwich element. The molded body having a rectangular cross section shown at the rightmost in FIG. 8 is preferably a pressure plate, especially in the production of fiber composite parts from prepreg material in an autoclave so as to prevent warpage in the laminate structure. Used as

DESCRIPTION OF SYMBOLS 1 Structure 2 Base 3 Prepreg material (for example, membrane panel)
4 Support Core 5 Molded Body 6 End (Support Core)
7 Sealing tape (bottom)
8 Sealing tape (upper)
9 Prepreg material (eg Ω stringer profile)
10 Fiber composite part 11 Shell segment 12 Functional layer 13 Vacuum foil 14 Suction plug / Pressure plug 15 Inside (support core)
16 Arrow 17 Socket 18 Continuous blank 19 Cut line 20 Blank 21 Bending line (support core)
22 Base surface (support core)
23 Left hand side (support core)
24 Right hand side (support core)
25 First joint surface (support core)
26 Second joint surface (support core)
27 Adhesive

Claims (16)

  A support core (4) for producing a fiber composite part (10), at least in part formed of cardboard and / or using paper, crushed and finished fiber composite part ( Support core that can be removed from 10).   2. Support core according to claim 1, characterized in that it is used for producing a hollow profile.   3. Support core according to claim 1 or 2, characterized in that it has a cross section that can be formed from any preferred combination of triangular, rectangular, trapezoidal, groove, oval or elliptical cross sections.   4. The support core according to claim 1, wherein the support core is formed using at least two partial support cores.   5. Support core according to claim 4, characterized in that the partial support cores are bonded together, in particular connected to one another by at least a multi-site adhesion and / or positively.   The support core according to any one of claims 1 to 5, further comprising a functional layer, particularly a non-adhesive layer and / or a seal layer, at least in a plurality of portions.   Support core according to any one of the preceding claims, characterized in that it can be removed from the fiber composite part (10) by using a vacuum and / or a solvent.   It can be guided into the cured fiber composite part (10) and is actively applied to the fiber composite part (10) using excessive pressure at least in several locations, especially for area repair work on the fiber composite part. Support core according to any one of the preceding claims, characterized in that it can be implemented.   9. A method of manufacturing a fiber composite part (10) formed using a thermosetting plastic material using at least one support core (4) according to any one of claims 1 to 8, comprising a fiber composite The geometric shape of the part (10) is defined by at least one support core (4) in at least a plurality of locations, the at least one support core (4) being crushed and finished fiber composite part The manufacturing method of the fiber composite part removed from (10).   The at least one support core (4) is provided with a curable fiber composite material, in particular a prepreg material (3, 9), at least in a plurality of locations, the curable fiber composite material being cured and at least one support core (4). ) Is removed from the finished fiber composite part (10).   At least one support core (4) is provided in at least a plurality of locations with a dry reinforcing fiber arrangement, the dry reinforcing fiber arrangement being impregnated with a thermosetting plastic material to produce a curable fiber composite material. 11. A method for manufacturing a fiber composite part according to claim 9 or 10, characterized in that the material is cured and at least one support core (4) is removed from the finished fiber composite part (10).   10. The at least one support core (4) with applied fiber composite material is covered with a vacuum foil (13) in order to produce the structure (1) at least in multiple locations. The manufacturing method of the fiber composite component as described in any one of thru | or 11.   The two ends (6) of the at least one support core (4) are connected to the vacuum foil (13) and / or the base (2) and / or using suitable sealing means, in particular a sealing tape (7, 8). The method for producing a fiber composite part according to any one of claims 9 to 12, wherein the fiber composite material and / or the dry reinforcing fiber arrangement is sealed.   The structure (1) is introduced into an autoclave or oven for curing and / or the structure (1) is cured at room temperature and / or standard pressure. The manufacturing method of the fiber composite component as described in any one of Claims.   15. The at least one support core (4) is crushed after being cured by applying a vacuum to the at least one support core (4). Manufacturing method of fiber composite parts.   16. The fiber composite part according to any one of claims 9 to 15, characterized in that at least one support core (4) is removed from the fiber composite part using a liquid and / or gas solvent, in particular water. Manufacturing method.

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